From 191dce109be3870f5800003bbee1484c8a92c9dd Mon Sep 17 00:00:00 2001
From: Peter Geoghegan <pg@bowt.ie>
Date: Thu, 26 Aug 2021 18:42:20 -0700
Subject: [PATCH] contrib/amcheck: Add heapam CHECK_FOR_INTERRUPTS().

Add a CHECK_FOR_INTERRUPTS() call to make heap relation verification
responsive to query cancellations.

Author: Mark Dilger <mark.dilger@enterprisedb.com>
Discussion: https://postgr.es/m/CAH2-Wzk-9RtQgb2QiuLv8j2O0j9tSFKPmmch5nWSZhguUxvbrw%40mail.gmail.com
Backpatch: 14-, where amcheck heap verification was introduced.
---
 contrib/amcheck/verify_heapam.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/contrib/amcheck/verify_heapam.c b/contrib/amcheck/verify_heapam.c
index 226271923a8..173f99d7870 100644
--- a/contrib/amcheck/verify_heapam.c
+++ b/contrib/amcheck/verify_heapam.c
@@ -395,6 +395,8 @@ verify_heapam(PG_FUNCTION_ARGS)
 	{
 		OffsetNumber maxoff;
 
+		CHECK_FOR_INTERRUPTS();
+
 		/* Optionally skip over all-frozen or all-visible blocks */
 		if (skip_option != SKIP_PAGES_NONE)
 		{